CPES – Clear Penetrating Epoxy Sealer
This product is used by the marine industry to repair rotten, punky wood on boats. It’s available online for about $36.00 for a 2 pint kit.
CPES is said to work best on rotten wood rather than sound wood.
It’s a clear epoxy sealer that is thin like water made for penetrating, which soaks deep into damaged or rotten wood, unlike an adhesive epoxy which just coats the surface of the wood. The epoxy resin is delivered into the wood pores through a solvent base. The same solvents also evaporate excess moisture from within the wood. All of the wood fibers and spores are then left encapsulated with the remaining epoxy. It glues the remaining fibers back together, and restores useful strength back into the wood, without changing the natural flexibility of the wood.
This product is available for both cold weather and warm weather applications.
NOTE: If you are contemplating trying out the above products, please be sure to follow the manufacturers directions and safety precautions.